My nephew is trying to work with openSUSE. He has 2 graphics cards in his system, a GTX 980 Ti and a GTX 960. The GTX 980 Ti is connected through HDMI and is gpu 0, the monitor works fine on that card. The GTX 960 is connected through DVI and is gpu 1, the monitor has a black background, he can move the mouse over to the this monitor, but the mouse icon turns to a X and he can not do anything on this monitor. How can we configure openSUSE to allow him to use the monitor as a work space on the GTX 960?
 
EDIT: Forgot to mention he is using KDE desktop.
 
 

Yes the nVidia drivers are installed. In the nVidia setting it shows both cards and both monitors. If we connect both monitors into the GTX 980 Ti, both monitors work fine. It's when he tries to use the 2nd monitor on the GTX 960 that the motitor doesn'y work correctly.

the_Scarlet_one
In the nvidiacontrol panel, you may need to “Activate all displays”. I use a 1050 to drive me side monitors and it took a while to get them to show. Verify all displays are activated and the control panel shows them under the SLI panel (obviously sli won’t work, but it will show what is connected where).

Then go to display settings for windows and Nvidia control panel and verify resolutions are correct. Make sure it shows “extend display” as selected.

These are not options in the Linux nVidia settings.
 
As I stated in nVidia settings it shows both cards and both monitors and to add, it shows the correct resolution for each monitor. He can not use the monitor on the GTX 960 for a work space. The background is black and when he moves his mouse pointer to the monitor it turns into an X. Connect both monitors to the GTX 980 Ti and it works perfect.